JP2016013733A - Spacer case for outboard engine and outboard engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spacer case for an outboard engine which inhibits deterioration of fastening force of a fastening member to securely fix the spacer case to an upper case and a lower case while flexibly dealing with differences of vertical lengths of spacer cases.SOLUTION: A spacer case 9 (a spacer case for an outboard engine) is formed so as to adjust a position of a lower case 8 relative to an upper case 7. The spacer case 9 includes a rear part 9b having a side through hole 92. The rear part 9b includes: an upper part fastening hole part 94 which opens on an upper surface of the spacer case 9 and into which a bolt 98a may be inserted; and a lower part fastening hole part 95a (95b) which opens on a lower surface and into which a bolt 98b (98c) may be inserted. The upper part fastening hole part 94 is formed so as to connect with the side through hole 92.

Description

  TECHNICAL FIELD The present invention relates to an outboard motor spacer case and an outboard motor, and more particularly to an outboard motor spacer case disposed between an upper case and a lower case and an outboard motor including the outboard motor spacer case. .

  Conventionally, an outboard motor including an outboard motor spacer case is known (see, for example, Patent Document 1).

  Patent Document 1 discloses an outboard motor including an upper case, a lower case, and a spacer case. The spacer case is disposed between the upper case and the lower case. This spacer case has a function of adjusting the vertical position of the lower case (propeller) with respect to the upper case (position where the outboard motor is attached to the hull). Further, the stud bolt is inserted from the lower case side toward the upper case side in a state where the upper case is disposed above the lower case via the spacer case. This stud bolt is longer than the spacer case in the vertical direction. Then, by fastening the stud bolt to the upper case, the spacer case is fixed (co-fastened) to the upper case together with the lower case.

JP 2003-214162 A

  However, in the outboard motor described in Patent Document 1, the length between the upper case and the lower case (the length of the spacer case) is changed according to the attachment position of the upper case to the hull. It is necessary to provide a stud bolt corresponding to the length of the spacer case. That is, when preparing multiple variations of spacer cases with different lengths, it is necessary to prepare multiple types of stud bolts with a special design corresponding to the length of the spacer case, increasing the number of variations. Becomes difficult. For this reason, it is desired to be able to flexibly cope with the difference in the length of the spacer case.

  Further, in the outboard motor described in Patent Document 1, since it is necessary to fasten a stud bolt longer than the spacer case to the upper case, the stud bolt is likely to be twisted. As a result, particularly when the spacer case is long, the fastening force (axial force) by the stud bolt may decrease due to the twist of the stud bolt when the spacer case is fixed. For this reason, even when spacer cases of various lengths are provided, it is possible to firmly fix the spacer case, the upper case, and the lower case by suppressing a decrease in the fastening force (axial force) of the stud bolt. Is desired.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a fastening force of a fastening member while flexibly responding to a difference in length in the vertical direction of the spacer case. It is an object to provide a spacer case for an outboard motor and an outboard motor capable of suppressing the lowering of the space and firmly fixing the spacer case, the upper case, and the lower case.

  An outboard motor spacer case according to a first aspect of the present invention is disposed between an upper case and a lower case of an outboard motor, and adjusts the vertical position of the lower case with respect to the upper case. A spacer case for an outboard motor, comprising a front portion having a drive shaft through hole through which the drive shaft can penetrate from an upper surface to a lower surface of the outboard motor spacer case, and a side opening portion opened to a side surface of the outboard motor spacer case. A rear portion having an opening on the upper surface of the outboard motor spacer case, an upper fastening hole into which the first fastening member can be inserted, and an opening on the lower surface of the outboard motor spacer case. And a lower fastening hole portion into which the second fastening member can be inserted, and at least one of the upper fastening hole portion and the lower fastening hole portion is located inside the outboard motor spacer case. It is formed so as to be connected to the opening.

  In the spacer case for an outboard motor according to the first aspect of the present invention, as described above, the upper fastening hole that opens into the upper surface of the outboard motor spacer case and into which the first fastening member can be inserted, and the ship A lower fastening hole that can be inserted into the second fastening member is provided in the rear part while opening on the lower surface of the outer case spacer case, and at least one of the upper fastening hole and the lower fastening hole is provided on the outboard side. It is formed so as to be connected to the side opening inside the machine spacer case. As a result, even if the length between the upper case and the lower case (the length of the spacer case) is changed according to the mounting position of the upper case on the hull, the side opening of the spacer case for the outboard motor The fastening members (first fastening member, second fastening member) can be inserted into and fixed to at least one of the upper fastening hole or the lower fastening hole. As a result, even when preparing spacer cases with different lengths, the length of the fastening hole connected to the side opening can be kept constant, so that the fastening member has a length corresponding to the length of the spacer case. There is no need to provide. Thereby, since the length of a spacer case can be changed without increasing the kind of fastening member, it can respond flexibly to the difference in the length of a spacer case.

  Further, when the outboard motor spacer case is fixed to the upper case and the lower case, the fastening member (first fastening member, second fastening member) is inserted into the upper fastening hole or the lower fastening hole from the side opening. Therefore, the outboard motor spacer case can be fastened to the upper case and the lower case using a fastening member shorter than the outboard motor spacer case. As a result, it is possible to make it difficult for the fastening member to be twisted. Therefore, it is possible to suppress the decrease in the fastening force of the fastening member and firmly fix the outboard motor spacer case to the upper case and the lower case.

  From the above, according to the spacer case for an outboard motor according to the first aspect of the present invention, while flexibly responding to the difference in the length in the vertical direction of the spacer case, the decrease in the fastening force of the fastening member is suppressed, The spacer case can be firmly fixed to the upper case and the lower case.

  Further, when the upper fastening hole is formed so as to be connected to the side opening inside the outboard motor spacer case, the first fastening member inserted into the upper fastening hole from the side opening. Thus, the spacer case for the outboard motor can be fixed to the upper case. For this reason, since a 1st fastening member can be inserted from the downward direction of an upper case, it can prevent that external water accumulates in the 1st fastening member insertion port of an upper case.

  In the spacer case for an outboard motor according to the first aspect, preferably, the side opening is a side through-hole formed so as to penetrate the outboard motor spacer case to the side, or the outboard motor. It is the side recessed part formed so that it might open in the side surface of the spacer case for use and may become depressed in a concave shape. If comprised in this way, when a side opening part is formed by a side through-hole, an opening shape can be made into a left-right symmetric shape. Further, when the side opening is formed by the side recess, only the minimum part necessary for inserting the first fastening member or the second fastening member can be opened.

  The outboard motor spacer case according to the first aspect is preferably configured such that a cover member that covers the side opening is attached to the side opening. If comprised in this way, even when a side opening part is provided, it can prevent that resistance with the spacer case for outboard motors and external water increases. Further, it is possible to suppress foreign matters from entering the outboard motor spacer case from the side opening.

  In the spacer case for an outboard motor according to the first aspect, a female screw is preferably formed in one of the upper fastening hole and the lower fastening hole. With this configuration, the first fastening member or the second fastening member inserted from one of the upper case and the lower case can be easily inserted into one of the upper fastening hole and the lower fastening hole of the outboard motor spacer case. Can be concluded.

  In this case, preferably, the female screw is not formed in the upper fastening hole, but is formed in the lower fastening hole, and the upper fastening hole is configured to be connected to the side opening, The rear portion is fastened to the upper case by the first fastening member inserted into the upper fastening hole portion from the side opening portion toward the upper side, and is inserted from the lower case side toward the side opening portion. The second fastening member is configured to be fastened to the lower case by being screwed into the female screw of the lower fastening hole. If comprised in this way, the 1st fastening member inserted from the downward side (lower side of an outboard motor) of the upper fastening hole and penetrating to the upper case side can be easily fastened to the female screw on the upper case side. In addition, the second fastening member inserted from the lower side of the lower case (the lower side of the outboard motor) can be easily fastened to the lower fastening hole (the female screw).

  In the configuration in which the female screw is not formed in the upper fastening hole, the side opening is preferably formed in the upper part of the side surface of the outboard motor spacer case. If comprised in this way, since the length of the upper fastening hole part connected to a side opening part inside the spacer case for outboard motors can be made shorter, the upper fastening hole can be provided via the side opening part. The length of the 1st fastening member inserted upward from a part can be made shorter.

  In the spacer case for an outboard motor according to the first aspect, preferably, a plurality of upper fastening holes and a plurality of lower fastening holes are provided along the front-rear direction. If comprised in this way, the spacer case for an outboard motor, an upper case, and a lower case can be more reliably fixed by the some 1st fastening member and 2nd fastening member.

  In the spacer case for an outboard motor according to the first aspect, preferably, the upper fastening hole is provided at a position corresponding to the lower fastening hole in the vertical direction. With this configuration, together with the upper fastening hole of the outboard motor spacer case, the upper case fastening hole into which the first fastening member is inserted, and the lower fastening hole of the outboard motor spacer case. The fastening holes of the lower case into which the second fastening member is inserted can be arranged at positions corresponding to each other. As a result, even when the outboard motor spacer case is not disposed between the upper case and the lower case, the upper case and the lower case can be connected to each other by using the upper case fastening hole and the lower case fastening hole. Can be fixed directly to each other.

  In the outboard motor spacer case according to the first aspect, preferably, the upper fastening hole and the lower fastening hole are provided in the vicinity of the center line of the outboard motor spacer case extending in the front-rear direction in plan view. It has been. With this configuration, the outboard motor spacer case and the upper case, and the outboard motor spacer case and the lower case can be fixed with good balance in the vicinity of the center line of the outboard motor spacer case. .

  In the configuration in which the upper fastening hole and the lower fastening hole are provided in the vicinity of the center line of the outboard motor spacer case in a plan view, preferably, the side opening is formed from the side surface to the outboard motor spacer. It is a side recess formed so as to be recessed in a concave shape toward the center line of the case, and the side recess is recessed from the one surface of the side part of the outboard motor spacer case over the center line in plan view. It is formed in such a way. If comprised in this way, a 1st fastening member and a 2nd fastening member can be easily inserted in the upper fastening hole provided in the centerline vicinity of the outboard motor spacer case, and the lower fastening hole. . As a result, the outboard motor spacer case, the upper case, and the lower case can be easily fixed without providing a through hole on the side.

  In the outboard motor spacer case according to the first aspect, preferably, the side opening is formed in a substantially rectangular shape. If comprised in this way, unlike the case where a side opening part is made circular shape, for example, when inserting several fastening members along a front-back direction via a side opening part, it is easier to perform an insertion operation | work. can do.

  An outboard motor according to a second aspect of the present invention includes an engine, a drive shaft driven by the engine, an upper case through which the drive shaft passes, a lower case disposed below the upper case, and an upper case And a spacer case for adjusting the vertical position of the lower case with respect to the upper case. The spacer case penetrates the drive shaft from the upper surface to the lower surface of the spacer case. An upper portion including a front portion having a hole and a rear portion having a side opening that opens on a side surface of the spacer case, wherein the rear portion opens on the upper surface of the spacer case and the first fastening member is inserted. Hole for opening, and a lower portion into which the second fastening member is inserted while opening in the lower surface of the spacer case And a forming hole portion, at least one of the upper fastening hole and the lower fastening holes are formed so as to be connected to the side opening inside the spacer case.

  In the outboard motor according to the second aspect of the present invention, as described above, the opening is made on the upper surface of the spacer case, the upper fastening hole portion into which the first fastening member can be inserted, and the lower surface of the spacer case. A lower fastening hole into which the second fastening member can be inserted is provided in the rear part, and at least one of the upper fastening hole and the lower fastening hole is connected to the side opening inside the spacer case. Form. Thereby, in an outboard motor provided with this spacer case, it is possible to flexibly cope with the difference in length of the spacer case. Further, it is possible to firmly fix the spacer case, the upper case, and the lower case of the outboard motor by suppressing a decrease in the fastening force of the fastening member. As a result, when the spacer case is provided in addition to the upper case and the lower case, it is possible to suppress a decrease in the rigidity of the entire outboard motor case. From the above, in the outboard motor according to the second aspect of the present invention, the lowering of the fastening force of the fastening member is suppressed while flexibly dealing with the difference in the vertical length of the spacer case, and the spacer case and the upper case And can be firmly fixed to the lower case.

  Further, when the upper fastening hole is formed so as to be connected to the side opening inside the outboard motor spacer case, the first fastening member inserted into the upper fastening hole from the side opening. Thus, the spacer case can be fixed from below the upper case.

  In the outboard motor according to the second aspect, preferably, the first fastening member and the second fastening member have a length equal to or shorter than the length of the spacer case in the vertical direction. If comprised in this way, it can be made hard to generate | occur | produce the twist of a 1st fastening member and a 2nd fastening member using the 1st fastening member and 2nd fastening member whose length is shorter than a spacer case.

  In this case, it is preferable that at least one of the first fastening member and the second fastening member inserted into the upper fastening hole or the lower fastening hole through the side opening is a side in the vertical direction. The length is equal to or less than the length of the side opening. If comprised in this way, at least one of a 1st fastening member or a 2nd fastening member can be easily inserted in a hole for upper fastening or a hole for lower fastening via a side opening. As a result, the fastening work by the fastening member can be easily performed.

  The outboard motor according to the second aspect is preferably configured such that a cover member that covers the side opening is attached to the side opening. If comprised in this way, even when a side opening part is provided, it can prevent that resistance with a spacer case and external water increases. Moreover, it can suppress that a foreign material penetrate | invades into a spacer case from a side opening part.

  In the outboard motor according to the second aspect, a female screw is preferably formed in one of the upper fastening hole and the lower fastening hole. With this configuration, the first fastening member or the second fastening member inserted from one of the upper case and the lower case can be easily fastened to one of the upper fastening hole and the lower fastening hole of the spacer case. it can.

  In this case, preferably, the female screw is not formed in the upper fastening hole, but is formed in the lower fastening hole, and the upper fastening hole is configured to be connected to the side opening, The rear portion is fastened to the upper case by the first fastening member inserted into the upper fastening hole portion from the side opening portion toward the upper side, and is inserted from the lower case side toward the side opening portion. The second fastening member is configured to be fastened to the lower case by being screwed into the female screw of the lower fastening hole. If comprised in this way, the 1st fastening member inserted from the downward side (lower side of an outboard motor) of the upper fastening hole and penetrating to the upper case side can be easily fastened to the female screw on the upper case side. In addition, the second fastening member inserted from the lower side of the lower case (the lower side of the outboard motor) can be easily fastened to the lower fastening hole (the female screw).

  In the configuration in which the female screw is not formed in the upper fastening hole, the side opening is preferably formed in the upper part of the side surface of the spacer case. If comprised in this way, since the length of the upper fastening hole part connected to a side opening part inside the spacer case for outboard motors can be made shorter, the upper fastening hole can be provided via the side opening part. The length of the 1st fastening member inserted upward from a part can be made shorter.

  In the outboard motor according to the second aspect, preferably, a plurality of upper fastening holes and lower fastening holes are provided along the front-rear direction. If comprised in this way, a spacer case, an upper case, and a lower case can be reliably fixed by the some 1st fastening member and 2nd fastening member.

  In the outboard motor according to the second aspect, the upper fastening hole is preferably provided at a position corresponding to the lower fastening hole in the vertical direction. If comprised in this way, the 2nd fastening member will be inserted with the fastening hole part of the upper case into which a 1st fastening member is inserted with the upper fastening hole part of a spacer case, and the lower fastening hole part of a spacer case The fastening holes of the lower case can be arranged at positions corresponding to each other. Thus, even when the spacer case is not disposed between the upper case and the lower case, the upper case and the lower case are directly fixed using the fastening holes of the upper case and the fastening holes of the lower case. be able to.

  According to the present invention, as described above, while flexibly dealing with the difference in the vertical length of the spacer case, the spacer case, the upper case, and the lower case can be It can be firmly fixed.

It is a figure for demonstrating the whole structure of the outboard motor by one Embodiment of this invention. 1 is an exploded perspective view showing an upper case, a lower case, and a spacer case of an outboard motor according to an embodiment of the present invention. It is the perspective view which looked at the spacer case of the outboard motor by one Embodiment of this invention from the downward direction. It is sectional drawing which showed the state which has arrange | positioned the spacer case to the outboard motor by one Embodiment of this invention. FIG. 5 is a cross-sectional view illustrating a state in which a spacer case longer than the spacer case illustrated in FIG. 4 is disposed in the outboard motor according to the embodiment of the present invention. It is sectional drawing which showed the state which does not arrange | position a spacer case to the outboard motor by one Embodiment of this invention. It is the figure which showed the state which inserts a tool in the side through-hole of the outboard motor by one Embodiment of this invention, and fastens a bolt. FIG. 6 is a plan view showing a modification of the spacer case of the outboard motor according to the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  With reference to FIGS. 1-6, the structure of the outboard motor 1 by one Embodiment of this invention is demonstrated. In the figure, “FWD” indicates the forward direction of the hull, and “BWD” indicates the reverse direction of the hull.

  As shown in FIG. 1, the outboard motor 1 includes an engine 2, a drive shaft 3, a bevel gear 4, and a propeller shaft 5. The outboard motor 1 includes a cowling (engine case) 6, an upper case 7, a lower case 8, and a spacer case 9. The spacer case 9 is an example of the “spacer case for outboard motor” in the present invention.

  The engine 2 includes a crankshaft 2a. The engine 2 is configured to rotate the crankshaft 2a as it is driven.

  The crankshaft 2a is disposed so as to rotate around a rotation axis A1 extending in the vertical direction. Further, the lower end portion of the crankshaft 2 a is connected to the upper end portion of the drive shaft 3.

  The drive shaft 3 is disposed so as to rotate around the rotation axis A1. The drive shaft 3 is configured so that the driving force of the engine 2 is transmitted via the crankshaft 2a. As a result, the drive shaft 3 rotates coaxially with the crankshaft 2a about the rotation axis A1.

  The bevel gear 4 includes a pinion gear 4 a attached to the lower end portion of the drive shaft 3, and a forward bevel gear 4 b and a backward bevel gear 4 c for transmitting power to the propeller shaft 5.

  The propeller shaft 5 is configured to extend in a direction orthogonal to the drive shaft 3. A propeller 5 a is attached to the rear end portion of the propeller shaft 5. Further, the propeller shaft 5 has a pinion gear 4a attached to the lower end portion of the drive shaft 3 meshing with the forward bevel gear 4b and the reverse bevel gear 4c, and is connected to a dog clutch 4d that rotates integrally with the propeller shaft 5. By being selectively coupled, it is configured to rotate about the axis A2.

  The cowling 6 is configured to cover the engine 2. The cowling 6 is made of resin or metal.

  The upper case 7 is disposed below the engine 2 and the cowling 6. The upper case 7 is configured such that the drive shaft 3 passes through the inside. As shown in FIG. 2, screw holes 71 a and 71 b into which bolts 98 a described later are inserted are formed at the lower end portion of the upper case 7. A plurality of screw holes 71a are formed near the outer edge of the upper case 7 in plan view. Two screw holes 71b are formed in the rear part of the upper case 7 in plan view. The screw hole 71b is formed at substantially the center in the lateral direction perpendicular to the front-rear direction of the upper case 7 in plan view. Female screws 711a and 711b are formed on the inner peripheral surfaces of the screw holes 71a and 71b, respectively. The bolt 98a is an example of the “first fastening member” in the present invention.

  As shown in FIG. 1, the lower case 8 is disposed below the upper case 7. The lower case 8 is configured to cover the lower portion of the drive shaft 3, the pinion gear 4 a, the forward bevel gear 4 b and the reverse bevel gear 4 c, and the propeller shaft 5. As shown in FIG. 2, screw insertion holes 81a and 81b into which bolts 98b to be described later are inserted and screw insertion holes 81c into which bolts 98c to be described later are inserted are formed at the upper end portion of the lower case 8. . A plurality of screw insertion holes 81a are formed near the outer edge of the lower case 8 in plan view. One screw insertion hole 81b and 81c is formed in the rear part of the lower case 8 in plan view. The screw insertion holes 81b and 81c are formed at substantially the center in the lateral direction perpendicular to the front-rear direction of the lower case 8 in plan view. Moreover, the internal thread is not formed in the internal peripheral surface of the screw insertion holes 81a-81c. The bolt 98b is an example of the “second fastening member” in the present invention. The bolt 98c is an example of the “second fastening member” in the present invention.

  As shown in FIG. 1, the spacer case 9 is disposed between the upper case 7 and the lower case 8. The spacer case 9 is provided to adjust the vertical position of the lower case 8 (propeller 5a) with respect to the upper case 7 (outboard motor mounting position on the hull 100). The spacer case 9 includes a forward portion 9 a in the forward direction of the hull 100 and a rear portion 9 b in the reverse direction of the hull 100. As shown in FIG. 2, the spacer case 9 is configured such that the upper end and the lower end are substantially parallel. The spacer case 9 is tapered toward the front and the rear, and has a streamline shape in plan view. The spacer case 9 is made of a metal such as aluminum.

  The front portion 9 a includes a drive shaft through hole 91 through which the drive shaft 3 passes from the upper surface 9 c to the lower surface 9 d of the spacer case 9.

  The rear portion 9 b includes a side through hole 92 that opens on the side surface 9 e of the spacer case 9 and a cover member 93. As shown in FIGS. 2 and 3, an upper fastening hole 94 and lower fastening holes 95a and 95b are formed in the rear portion 9b. Side fastening holes 96 are provided on the outer periphery of the upper surface 9 c of the spacer case 9. Side fastening holes 97 are provided on the outer peripheral portion of the lower surface 9 d of the spacer case 9. The spacer case 9 and the upper case 7 are fixed by bolts 98a. The spacer case 9 and the lower case 8 are fixed by bolts 98b and 98c. The side through hole 92 is an example of the “side opening” in the present invention.

  As shown in FIG. 2, the side through hole 92 is formed in the upper part of the side surface 9 e of the spacer case 9 (in the vicinity of the upper surface 9 c). The side through hole 92 is formed so as to penetrate the spacer case 9 to the side. As shown in FIGS. 1 and 2, the side through hole 92 is formed in a substantially rectangular shape when viewed from the side. Specifically, the side through hole 92 is formed in a rectangular shape having long sides in the front-rear direction.

  A pair of cover members 93 (see FIG. 2) is provided so as to cover the side through holes 92 from both sides. The cover member 93 is made of resin. The cover member 93 is formed in a substantially rectangular shape corresponding to the side through hole 92.

  The upper fastening hole 94 is provided at a position corresponding to the screw hole 71 b of the upper case 7. The upper fastening hole 94 is configured to open to the upper surface 9 c of the spacer case 9. As shown in FIGS. 4 and 5, the upper fastening hole 94 is formed so as to be connected to the side through hole 92 inside the spacer case 9. That is, the upper fastening hole 94 is a substantially cylindrical through hole extending in the vertical direction. A female screw is not formed on the inner peripheral surface of the upper fastening hole 94. Two upper fastening holes 94 are provided at a predetermined interval along the front-rear direction. The upper fastening hole 94 is configured such that a bolt 98a is inserted therein.

  As shown in FIG. 2, the lower fastening holes 95a and 95b are provided at positions corresponding to the screw insertion holes 81b and 81c of the lower case 8, respectively. As shown in FIGS. 3 to 5, the lower fastening hole 95 a (95 b) is configured to open to the lower surface 9 d of the spacer case 9. The lower fastening hole 95a (95b) is not connected to the side through hole 92. That is, the lower fastening hole 95a (95b) is a non-through hole that opens only in the lower part. The lower fastening hole 95a (95b) extends in the vertical direction and has a substantially cylindrical shape. A female screw 951a (951b) is formed on the inner peripheral surface of the lower fastening hole 95a (95b). The lower fastening holes 95a and 95b are provided so as to be aligned along the front-rear direction. The lower fastening hole 95a (95b) is configured such that a bolt 98b (98c) is inserted therein.

  The lower fastening holes 95a and 95b are provided at positions corresponding to the two upper fastening holes 94 in the vertical direction (the same position in plan view). That is, the central axes of the lower fastening holes 95a and 95b and the central axes of the corresponding upper fastening holes 94 are arranged in the same axis along the vertical direction. The lower fastening holes 95a and 95b are provided in the vicinity (on or near the center line 900) of the center line 900 (see FIG. 2) of the spacer case 9 extending in the front-rear direction in plan view.

  As shown in FIG. 2, the side fastening holes 96 are provided at positions corresponding to the screw holes 71 a of the upper case 7 of the spacer case 9. The side fastening hole 96 is a substantially cylindrical through hole extending in the vertical direction. A female screw is not formed on the inner peripheral surface of the side fastening hole 96. A plurality of side fastening holes 96 are provided along the outer periphery of the upper surface 9 c of the spacer case 9. The side fastening hole 96 has a recess 96a (see FIG. 3) formed at a position corresponding to the side fastening hole 96 on the side surface 9e of the spacer case 9, so that the bolt 98a is inserted. It is configured.

  The side fastening hole 97 is provided at a position corresponding to the screw insertion hole 81 a of the lower case 8 on the lower end surface of the spacer case 9. The side portion fastening hole 97 is provided at a position corresponding to the side portion fastening hole 96. The side fastening hole 97 is a substantially cylindrical through hole extending in the vertical direction. A female screw 971 is formed on the inner peripheral surface of the side fastening hole 97. A plurality of side fastening holes 97 are provided along the outer periphery of the lower surface 9 d of the spacer case 9. The side fastening hole 97 is configured such that a bolt 98b is inserted therein.

  As shown in FIG. 4, the bolts 98a to 98c have a length equal to or shorter than the length L3 of the spacer case 9 in the vertical direction. The bolts 98a and 98b have a length equal to or less than the length L0 of the side through hole 92 in the vertical direction. The bolts 98a to 98c are bolts in which a male screw is formed only at the tip. That is, the bolts 98a to 98c are not stud bolts in which male screws are formed at both ends. Bolts 98a and 98b have the same length L1. The bolt 98c has a length L2 that is greater than the length L1 of the bolt 98a (98b).

  As shown in FIGS. 4 and 5, the outboard motor 1 has a spacer case 9 (length L3: see FIG. 4) or a spacer case having a different vertical length between the upper case 7 and the lower case 8. 109 (length L4: see FIG. 5) is arranged, but is configured to be fixed by common bolts 98a, 98b and 98c. The two spacer cases 9 and 109 having different lengths are merely examples, and any of three or more types of spacer cases having different lengths can be disposed between the upper case 7 and the lower case 8. It is. Also in this case, it is possible to fix each spacer case using common bolts 98a, 98b and 98c.

  As shown in FIG. 6, the outboard motor 1 can directly fix the upper case 7 and the lower case 8 to each other without using the spacer case 9 (see FIG. 4) or 109 (see FIG. 5). It is also configured. Also in this case, it can be fixed by common bolts 98b and 98c. In this case, the bolt 98b inserted into the screw insertion hole 81a (see FIG. 2) of the lower case 8 is directly screwed into the screw hole 71a (see FIG. 2) of the upper case 7. Also, the bolt 98b (98c) inserted into the screw insertion hole 81b (81c) of the lower case 8 is directly screwed into the screw hole 71b of the upper case 7. Thus, the vertical position of the lower case 8 relative to the upper case 7 can be easily adjusted.

  Next, a method for fixing the spacer case 9 and the lower case 8 will be described with reference to FIGS.

  First, as shown in FIG. 2, the bolt 98 b is inserted into the screw insertion holes 81 a and 81 b of the lower case 8 with the tip end directed upward (side through hole 92 side). Further, the bolt 98c is inserted into the screw insertion hole 81c of the lower case 8 with the tip directed upward.

  Next, the bolt 98 b at a position corresponding to the position of the side fastening hole 97 of the spacer case 9 is screwed into the female screw 971 of the side fastening hole 97. Further, the bolt 98b at a position corresponding to the position of the lower fastening hole 95a of the spacer case 9 is screwed into the female screw 951a of the lower fastening hole 95a. The bolt 98c at a position corresponding to the position of the lower fastening hole 95b of the spacer case 9 is screwed into the female screw 951b of the lower fastening hole 95b. Thereby, as shown in FIG. 4, the spacer case 9 and the lower case 8 are fixed to each other.

  Next, a method for fixing the spacer case 9 and the upper case 7 will be described with reference to FIGS. 2, 4, and 7.

  First, as shown in FIG. 2, the bolt 98 a is inserted into the side fastening hole 96 of the spacer case 9 with the tip facing upward. Further, the bolt 98a is inserted into the upper fastening hole 94 of the spacer case 9 with the tip directed upward.

  Next, as shown in FIG. 7, the bolt 98 a at a position corresponding to the position of the side fastening hole 96 of the spacer case 9 is attached to the female screw 711 a of the screw hole 71 a of the upper case 7 using the tool 200. Screw together. Further, a bolt 98 a at a position corresponding to the position of the upper fastening hole 94 of the spacer case 9 is screwed into the female screw 711 b of the screw hole 71 b of the upper case 7. Thereby, as shown in FIG. 4, the spacer case 9 and the upper case 7 are fixed to each other. Thereafter, as shown in FIG. 2, the cover member 93 is attached to the side through hole 92.

  In the present embodiment, the following effects can be obtained.

  In the present embodiment, as described above, the upper opening 9c of the spacer case 9 opens, the upper fastening hole 94 into which the bolt 98a can be inserted, the lower opening 9d of the spacer case 9, and the bolt 98b (98c). ) Can be inserted in the rear portion 9b. Further, an upper fastening hole 94 is formed so as to be connected to the side through hole 92 inside the spacer case 9. As a result, even when the length between the upper case 7 and the lower case 8 is changed according to the attachment position of the upper case 7 to the hull 100, the bolt 98a is moved upward from the side through hole 92 of the spacer case 9. It can be inserted into the fastening hole 94 and fixed. As a result, even when the spacer cases 9 and 109 having different lengths are prepared, the length of the upper fastening hole portion 94 connected to the side through hole 92 can be kept constant. It is not necessary to provide a bolt 98a having a length corresponding to the length. Thereby, since the length of the spacer case (9 and 109) can be changed without increasing the kind of the bolt 98a, it is possible to flexibly cope with the difference in the length of the spacer case.

  When the spacer case 9 is fixed to the upper case 7 and the lower case 8, the bolt 98 a can be inserted into the upper fastening hole 94 from the side through hole 92 and fixed so that the spacer case 9 is shorter than the spacer case 9. The spacer case 9 can be fastened to the upper case 7 using the bolt 98a. Thereby, the twist of the bolt 98a can be made difficult to occur. Therefore, the spacer case 9 can be firmly fixed to the upper case 7 while suppressing a decrease in the fastening force of the bolt 98a. As a result, even when the spacer case 9 is provided in addition to the upper case 7 and the lower case 8, it is possible to prevent the rigidity of the entire case of the outboard motor 1 from being lowered. From the above, in the outboard motor 1 of the present embodiment, the spacer case 9 can be flexibly dealt with the difference in the vertical length (L3, L4) of the spacer case 9 while suppressing a decrease in the fastening force of the bolt 98a. 9 can be firmly fixed to the upper case 7.

  Furthermore, in the outboard motor 1 of the present embodiment, the spacer case 9 can be fixed to the upper case 7 by the bolt 98a inserted into the upper fastening hole 94 from the side through hole 92.

  In the present embodiment, the side through hole 92 is configured to penetrate the spacer case 9 laterally. Thereby, an opening shape can be made into a left-right symmetric shape.

  In the present embodiment, the side through hole 92 is configured such that a cover member 93 that covers the side through hole 92 is attached. Thereby, it can prevent that resistance with the spacer case 9 and external water increases. Further, it is possible to suppress foreign matters from entering the spacer case 9 from the side through holes 92.

  In the present embodiment, the female screw 951a (951b) is formed in the lower fastening hole 95a (95b). Thereby, the bolt 98b (98c) inserted from the lower case 8 can be easily fastened to the lower fastening hole 95a (95b) of the spacer case 9.

  In this embodiment, a female screw 951a (951b) is formed in the lower fastening hole 95a (95b) without forming a female screw in the upper fastening hole 94. Further, an upper fastening hole portion 94 is formed so as to be connected to the side through hole 92, and is fastened to the upper case 7 by a bolt 98a inserted into the upper fastening hole portion 94 from the side through hole 92 side upward. At the same time, the bolt 98b (98c) inserted from the lower case 8 side toward the side through hole 92 is screwed into the female screw 951a (951b) of the lower fastening hole 95a (95b). The rear portion 9 b is configured to be fastened to 8. Accordingly, the bolt 98a inserted from the lower side of the upper fastening hole 94 and penetrating to the upper case 7 side can be easily fastened to the female screw 711b on the upper case 7 side, and the lower side of the lower case 8 Can be easily fastened to the lower fastening hole 95a (95b).

  In the present embodiment, the side through hole 92 is formed in the upper part of the side surface 9 e of the spacer case 9. Thereby, the length of the bolt 98a inserted upward from the upper fastening hole 94 through the side through hole 92 can be further shortened.

  In this embodiment, a plurality of upper fastening holes 94 and a plurality of lower fastening holes 95a (95b) are provided. Thereby, the spacer case 9, the upper case 7, and the lower case 8 can be more reliably fixed by the plurality of bolts 98a and 98b (98c).

  In the present embodiment, the upper fastening hole 94 is provided at a position corresponding to the lower fastening hole 95a (95b) in the vertical direction. Thereby, the screw hole 71b of the upper case 7 into which the bolt 98a is inserted together with the upper fastening hole 94 of the spacer case 9, and the bolt 98b (98c) together with the lower fastening hole 95a (95b) of the spacer case 9 are inserted. The screw insertion holes 81b (81c) of the lower case 8 can be arranged at positions corresponding to each other (the same position in plan view). Thus, even when the spacer case 9 is not disposed between the upper case 7 and the lower case 8, the upper case 7 and the screw holes 71b of the upper case 7 and the screw insertion holes 81b (81c) of the lower case 8 can be The lower case 8 can be directly fixed to each other.

  In the present embodiment, the upper fastening hole 94 and the lower fastening hole 95a (95b) are provided in the vicinity of the center line 900 of the spacer case 9 extending in the front-rear direction in plan view. As a result, the spacer case 9 and the upper case 7 and the spacer case 9 and the lower case 8 can be fixed with good balance near the center line 900 of the spacer case 9.

  In the present embodiment, the side through holes 92 are formed in a substantially rectangular shape. Thereby, when inserting the several volt | bolt 98a through the side through-hole 92 along the front-back direction, an insertion operation can be made easier.

  In the present embodiment, the bolt 98a and the bolt 98b (98c) are formed to have a length equal to or shorter than the length L3 of the spacer case 9 in the vertical direction. Thereby, the bolt 98a and the bolt 98b (98c) whose length is shorter than that of the spacer case 9 can be used to make it difficult for the bolt 98a and the bolt 98b (98c) to be twisted.

  In the present embodiment, the bolt 98a is formed to have a length L1 that is not more than the length L0 of the side through hole 92 in the vertical direction. Thus, the bolt 98a can be easily inserted into the upper fastening hole 94. As a result, the fastening operation using the bolt 98a can be easily performed.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims, and further includes meanings equivalent to the scope of claims and modifications (variants) within the scope.

  For example, in the above-described embodiment, the example in which the upper fastening hole portion 94 is connected to the side through hole 92 which is an example of the side opening portion of the present invention is shown, but the present invention is not limited thereto. In the present invention, the lower fastening hole may be connected to the side opening. In this case, a female screw is formed in the upper fastening hole. Then, the first fastening member is inserted from the upper case side (upper side) and fixed by screwing into the female screw of the upper fastening hole, and the female screw is not formed in the lower fastening hole. The second fastening member is formed so as to be connected to the side opening, and the second fastening member is passed through the lower fastening hole from the side opening and screwed into the female screw of the lower case. In this case, it is preferable to provide the side opening at the lower part of the spacer case. Thereby, the 2nd fastening member for fixing a spacer case and a lower case can be shortened.

  In the above embodiment, the example in which the upper fastening hole portion 94 is connected to the side through hole 92 which is an example of the side opening portion of the present invention is shown, but the present invention is not limited to this. In the present invention, both the upper fastening hole and the lower fastening hole may be connected to the side opening.

  In the said embodiment, although the example in which the side through-hole 92 which is an example of the side opening part of this invention was formed in the spacer case 9 was shown, this invention is not limited to this. In the present invention, as shown in FIG. 8, a side recess 192 (side opening) that opens to the side surface 9 e and is recessed may be formed in the spacer case 9. In this case, the side recess 192 is preferably formed so as to be recessed beyond the center line 900 from one surface of the side surface 9e of the spacer case 9 in plan view. Thereby, the first fastening member 93a can be easily inserted and fastened into the upper fastening hole 94 provided in the vicinity of the center line 900 of the spacer case 9 extending in the front-rear direction in plan view.

  In the said embodiment, although the example which provides the cover member 93 which covers the side through-hole 92 which is an example of the side opening part of this invention was shown, this invention is not limited to this. In the present invention, it is not necessary to provide a cover member that covers the side opening.

  In the above embodiment, the example in which the two upper fastening holes 94 are provided along the front-rear direction and the two lower fastening holes 95a and 95b are provided has been described, but the present invention is not limited thereto. In the present invention, one upper fastening hole and one lower fastening hole may be provided along the front-rear direction. Further, three or more upper fastening holes and lower fastening holes may be provided along the front-rear direction.

  In the said embodiment, although the example in which the volt | bolt 98b and the volt | bolt 98c which are examples of the 2nd fastening member of this invention have different length was shown, this invention is not limited to this. In the present invention, all the second fastening members may have the same length. Thereby, the number of types of bolts to be used can be further reduced.

DESCRIPTION OF SYMBOLS 1 Outboard motor 2 Engine 3 Drive shaft 7 Upper case 8 Lower case 9, 109 Spacer case (spacer case for outboard motor)
9a Front part 9b Rear part 9c Upper surface 9d Lower surface 9e Side surface 91 Drive shaft through hole 92 Side through hole (side opening)
93 Cover member 94 Upper fastening hole 95a, 95b Lower fastening hole 98a Bolt (first fastening member)
98b Bolt (second fastening member)
98c bolt (second fastening member)
192 Side recess (side opening)
900 Center line 951a, 951b Female thread

Claims (20)

A spacer case for an outboard motor, which is disposed between an upper case and a lower case of an outboard motor, and adjusts the vertical position of the lower case with respect to the upper case,
A front portion having a drive shaft through hole through which the drive shaft can pass from the upper surface to the lower surface of the spacer case for the outboard motor;
A rear portion having a side opening that opens on a side surface of the spacer case for the outboard motor, and
The rear part is
An upper fastening hole that opens into the upper surface of the outboard motor spacer case and into which the first fastening member can be inserted;
A lower fastening hole that opens into a lower surface of the outboard motor spacer case and into which a second fastening member can be inserted;
An outboard motor spacer case in which at least one of the upper fastening hole and the lower fastening hole is formed to be connected to the side opening inside the outboard motor spacer case.   The side opening is a side through hole formed so as to penetrate the outboard motor spacer case laterally, or is formed in a side surface of the outboard motor spacer case so as to be recessed. The spacer case for an outboard motor according to claim 1, wherein the spacer case is a lateral recess.   The outboard motor spacer case according to claim 1 or 2, wherein a cover member that covers the side opening is attached to the side opening.   The outboard motor spacer case according to any one of claims 1 to 3, wherein a female screw is formed in one of the upper fastening hole and the lower fastening hole. The female screw is not formed in the upper fastening hole, but is formed in the lower fastening hole,
The upper fastening hole is configured to be connected to the side opening,
The rear portion is fastened to the upper case by the first fastening member inserted into the upper fastening hole from the side opening side upward, and from the lower case side to the side opening. The ship according to claim 4, wherein the ship is configured to be fastened to the lower case by screwing the second fastening member inserted toward the part into the female screw of the lower fastening hole. Spacer case for external machine.   The outboard motor spacer case according to claim 5, wherein the side opening is formed in an upper portion of a side surface of the outboard motor spacer case.   The spacer case for an outboard motor according to any one of claims 1 to 6, wherein a plurality of the upper fastening holes and the lower fastening holes are provided along the front-rear direction.   The spacer case for an outboard motor according to any one of claims 1 to 7, wherein the upper fastening hole is provided at a position corresponding to the lower fastening hole in the vertical direction.   The upper fastening hole and the lower fastening hole are provided in the vicinity of a center line of the outboard motor spacer case extending in the front-rear direction in plan view. Spacer case for outboard motor as described in 2. The side opening is a side recess formed to be recessed from the side surface toward the center line of the outboard motor spacer case,
10. The outboard motor spacer according to claim 9, wherein the side recess is formed so as to be recessed beyond the center line from one surface of the side portion of the outboard motor spacer case in a plan view. Case.   The spacer case for an outboard motor according to any one of claims 1 to 10, wherein the side opening is formed in a substantially rectangular shape. Engine,
A drive shaft driven by the engine;
An upper case through which the drive shaft passes;
A lower case disposed below the upper case;
A spacer case disposed between the upper case and the lower case, and for adjusting a vertical position of the lower case with respect to the upper case;
The spacer case is
A front portion having a drive shaft through hole through which the drive shaft passes from the upper surface to the lower surface of the spacer case;
A rear portion having a side opening that opens on a side surface of the spacer case, and
The rear part is
An upper fastening hole that opens in the upper surface of the spacer case and into which the first fastening member is inserted;
And having a lower fastening hole into which the second fastening member is inserted while opening in the lower surface of the spacer case,
An outboard motor in which at least one of the upper fastening hole and the lower fastening hole is formed to be connected to the side opening inside the spacer case.   13. The outboard motor according to claim 12, wherein the first fastening member and the second fastening member have a length equal to or shorter than a length of the spacer case in the vertical direction.   At least one of the first fastening member and the second fastening member inserted into the upper fastening hole or the lower fastening hole through the side opening is the side in the vertical direction. The outboard motor according to claim 13, wherein the outboard motor has a length equal to or less than a length of the side opening.   The outboard motor according to any one of claims 12 to 14, wherein a cover member that covers the side opening is attached to the side opening.   The outboard motor according to any one of claims 12 to 15, wherein a female screw is formed in one of the upper fastening hole and the lower fastening hole. The female screw is not formed in the upper fastening hole, but is formed in the lower fastening hole,
The upper fastening hole is configured to be connected to the side opening,
The rear portion is fastened to the upper case by the first fastening member inserted into the upper fastening hole from the side opening side upward, and from the lower case side to the side opening. The ship according to claim 16, wherein the ship is configured to be fastened to the lower case by screwing the second fastening member inserted toward the part into the female screw of the lower fastening hole. Outside machine.   The outboard motor according to claim 17, wherein the side opening is formed in an upper portion of a side surface of the spacer case.   The outboard motor according to any one of claims 12 to 18, wherein a plurality of the upper fastening holes and the lower fastening holes are provided along the front-rear direction.   The outboard motor according to any one of claims 12 to 19, wherein the upper fastening hole is provided at a position corresponding to the lower fastening hole in the vertical direction.

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